2003 Scenic - Hissing from servo into cabin...

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RussellF97
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2003 Scenic - Hissing from servo into cabin...

Post by RussellF97 »

2003 Scenic diesel Dci, When first starting the engine and when switching off, there's a hissing from the servo into the cabin. The brakes work fine, it's just the hissing that's concerning the owner...
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Re: 2003 Scenic - Hissing from servo into cabin...

Post by xantia_v6 »

I don't know too much about the servo architecture on those, but I once experienced something similar on another car where a vacuum non-return valve got gummed up and stuck almost closed, making asthmatic noises at start up and shut down.
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